General Information

Component Location





General Description

The CVVT (Continuously Variable Valve Timing) system is installed on the chain sprocket of the intake camshaft. This system controls the intake camshaft to provide the optimal valve timing for every driving condition. The ECM controls the Oil Control Valve (OCV), based on the signals output from mass air flow, throttle position and engine coolant temperature. The CVVT controller regulates the intake camshaft angle using oil pressure through the OCV. As result, the relative position between the camshaft and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, exhaust emissions decrease under overall driving conditions.

DTC Description

PCM monitors CAM phase error while CMP signal is normally generating and vehicle engine is running at 2000 - 3000 rpm.
If the CAM phase does not move although PCM commands OCV duty cycle PCM determines that a fault exists and a DTC is stored.

DTC Detecting Condition





Schematic Diagram





Signal Waveform